﻿#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Newtonsoft.Utilities.Reflection;

namespace Newtonsoft.Utilities.Validation
{
  public static partial class ValidatorExtensions
  {
    public static Validator<T> IsNotNull<T>(this Validator<T> validator)
    {
      if (validator.Value == null)
        throw validator.BuildException("", ConstraintViolation.Null);

      return validator;
    }

    public static Validator<T> IsNull<T>(this Validator<T> validator)
    {
      if (validator.Value != null)
        validator.BuildException("", ConstraintViolation.NotNull);

      return validator;
    }

    public static Validator<T> IsType<T>(this Validator<T> validator, Type type)
    {
      T value = validator.Value;

      if (value != null)
      {
        if (!value.GetType().IsType(type))
          throw validator.BuildException("", ConstraintViolation.NotType);
      }

      return validator;
    }

    public static Validator<T> IsNotType<T>(this Validator<T> validator, Type type)
    {
      T value = validator.Value;

      if (value != null)
      {
        if (value.GetType().IsType(type))
          throw validator.BuildException("", ConstraintViolation.NotType);
      }

      return validator;
    }

  }
}